1 files changed, 26 insertions, 0 deletions
diff --git a/browser/components/backup/resources/SessionStoreBackupResource.sys.mjs b/browser/components/backup/resources/SessionStoreBackupResource.sys.mjs
index fa5dcca848..d28598944f 100644
--- a/browser/components/backup/resources/SessionStoreBackupResource.sys.mjs
+++ b/browser/components/backup/resources/SessionStoreBackupResource.sys.mjs
@@ -28,6 +28,32 @@ export class SessionStoreBackupResource extends BackupResource {
     return false;
   }
 
+  async backup(stagingPath, profilePath = PathUtils.profileDir) {
+    let sessionStoreState = lazy.SessionStore.getCurrentState(true);
+    let sessionStorePath = PathUtils.join(stagingPath, "sessionstore.jsonlz4");
+
+    /* Bug 1891854 - remove cookies from session store state if the backup file is
+     * not encrypted. */
+
+    await IOUtils.writeJSON(sessionStorePath, sessionStoreState, {
+      compress: true,
+    });
+    await BackupResource.copyFiles(profilePath, stagingPath, [
+      "sessionstore-backups",
+    ]);
+
+    return null;
+  }
+
+  async recover(_manifestEntry, recoveryPath, destProfilePath) {
+    await BackupResource.copyFiles(recoveryPath, destProfilePath, [
+      "sessionstore.jsonlz4",
+      "sessionstore-backups",
+    ]);
+
+    return null;
+  }
+
   async measure(profilePath = PathUtils.profileDir) {
     // Get the current state of the session store JSON and
     // measure it's uncompressed size.